/* Copyright (C) 2014 InfiniDB, Inc.

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License
   as published by the Free Software Foundation; version 2 of
   the License.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
   MA 02110-1301, USA. */

/***********************************************************************
 *   $Id: simplescalarfilter.cpp 6310 2010-03-04 19:46:18Z zzhu $
 *
 *
 ***********************************************************************/
#include <string>
#include <iostream>
#include <sstream>
using namespace std;

#include "simplescalarfilter.h"
#include "bytestream.h"
#include "objectreader.h"

namespace execplan
{
/**
 * Constructors/Destructors
 */
SimpleScalarFilter::SimpleScalarFilter()
{
}

SimpleScalarFilter::SimpleScalarFilter(const vector<SRCP>& cols, const SOP& op, const SCSEP& sub)
 : fCols(cols), fOp(op), fSub(sub), fData("simple scalar")
{
}

SimpleScalarFilter::SimpleScalarFilter(const SimpleScalarFilter& rhs)
 : Filter(rhs), fCols(rhs.fCols), fOp(rhs.fOp), fSub(rhs.fSub), fData(rhs.fData)
{
}

SimpleScalarFilter::~SimpleScalarFilter()
{
}

const string SimpleScalarFilter::toString() const
{
  ostringstream oss;
  oss << "SimpleScalarFilter" << endl;

  for (uint32_t i = 0; i < fCols.size(); i++)
    oss << fCols[i]->toString();

  oss << fOp->toString() << endl;
  oss << *(fSub.get());
  return oss.str();
}

string SimpleScalarFilter::toCppCode(IncludeSet& includes) const
{
  includes.insert("simplescalarfilter.h");
  stringstream ss;
  ss << "SimpleScalarFilter(std::vector<SRCP>{";
  if (!fCols.empty())
  {
    for (size_t i = 0; i < fCols.size() - 1; i++)
      ss << "boost::shared_ptr<ReturnedColumn>(new " << fCols.at(i)->toCppCode(includes) << "), ";
    ss << "boost::shared_ptr<ReturnedColumn>(new " << fCols.back()->toCppCode(includes) << ")";
  }
  ss << "}, ";
  ss << "boost::shared_ptr<Operator>(new " << fOp->toCppCode(includes)
     << "), boost::make_shared<CalpontSelectExecutionPlan>())";
  return ss.str();
}

ostream& operator<<(ostream& output, const SimpleScalarFilter& rhs)
{
  output << rhs.toString();
  return output;
}

void SimpleScalarFilter::serialize(messageqcpp::ByteStream& b) const
{
  b << static_cast<ObjectReader::id_t>(ObjectReader::SIMPLESCALARFILTER);
  Filter::serialize(b);
  b << static_cast<uint32_t>(fCols.size());

  for (uint32_t i = 0; i < fCols.size(); i++)
  {
    if (fCols[i] != NULL)
      fCols[i]->serialize(b);
    else
      b << static_cast<ObjectReader::id_t>(ObjectReader::NULL_CLASS);
  }

  if (fOp != NULL)
    fOp->serialize(b);
  else
    b << static_cast<ObjectReader::id_t>(ObjectReader::NULL_CLASS);

  if (fSub.get() != NULL)
    fSub->serialize(b);
  else
    b << static_cast<ObjectReader::id_t>(ObjectReader::NULL_CLASS);
}

void SimpleScalarFilter::unserialize(messageqcpp::ByteStream& b)
{
  ObjectReader::checkType(b, ObjectReader::SIMPLESCALARFILTER);

  Filter::unserialize(b);
  uint32_t size;
  b >> size;
  fCols.clear();
  SRCP srcp;

  for (uint32_t i = 0; i < size; i++)
  {
    srcp.reset(dynamic_cast<ReturnedColumn*>(ObjectReader::createTreeNode(b)));
    fCols.push_back(srcp);
  }

  fOp.reset(dynamic_cast<Operator*>(ObjectReader::createTreeNode(b)));
  fSub.reset(dynamic_cast<CalpontSelectExecutionPlan*>(ObjectReader::createExecutionPlan(b)));
}

bool SimpleScalarFilter::operator==(const SimpleScalarFilter& t) const
{
  const Filter *f1, *f2;

  f1 = static_cast<const Filter*>(this);
  f2 = static_cast<const Filter*>(&t);

  if (*f1 != *f2)
    return false;

  if (fCols.size() != t.fCols.size())
    return false;

  for (uint32_t i = 0; i < fCols.size(); i++)
  {
    if (fCols[i].get() != NULL)
    {
      if (*(fCols[i].get()) != *(t.fCols[i]).get())
        return false;
    }
    else if (t.fCols[i].get() != NULL)
      return false;
  }

  if (fOp != NULL)
  {
    if (*fOp != *t.fOp)
      return false;
  }
  else if (t.fOp != NULL)
    return false;

  if (fSub != NULL)
  {
    if (*fSub != t.fSub.get())
      return false;
  }
  else if (t.fSub != NULL)
    return false;

  if (fData != t.fData)
    return false;

  return true;
}

bool SimpleScalarFilter::operator==(const TreeNode* t) const
{
  const SimpleScalarFilter* o;

  o = dynamic_cast<const SimpleScalarFilter*>(t);

  if (o == NULL)
    return false;

  return *this == *o;
}

bool SimpleScalarFilter::operator!=(const SimpleScalarFilter& t) const
{
  return (!(*this == t));
}

bool SimpleScalarFilter::operator!=(const TreeNode* t) const
{
  return (!(*this == t));
}

}  // namespace execplan
